Home / 28,389,667-42,584,841.77-7,918,140.51

Finding the Fourth Proportional to 28,389,667, 42,584,841.77 and 7,918,140.51

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Solution

The fourth proportional to 28,389,667, 42,584,841.77 and 7,918,140.51 is: 11,877,305.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389,667 : 42,584,841.77 = 7,918,140.51 : x
  2. Step 2: Convert to fraction form
    28,389,667/42,584,841.77 = 7,918,140.51/x
  3. Step 3: Cross multiply
    28,389,667x = 42,584,841.77 × 7,918,140.51
  4. Step 4: Simplify right side
    28,389,667x = 337,192,760,730,977.12
  5. Step 5: Solve for x
    x = 337,192,760,730,977.12/28,389,667
  6. Step 6: Final answer
    x = 11,877,305.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.